This fairing is designed to address two primary issues.
- Increased size to allow for larger 2-6S ESCs like the new 32bit T-Motor ESCs
- T-Motor having dropped the 19 x 19mm hole pitch in favour of 16 x 16
These fairing locate on the Motor Bolts and the outer most bolt the holds the arms on. For this specific bolts I highly recommend not using Dome head bolts. The ESC is held on with one small Cable Tie.
Anyway I hope this is of helps to everyone.
Also use good quality PLA if you want them to last.